Georgeite Mineral Data

Georgeite Mineral Data +

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General Georgeite Information

Chemical Formula:

Cu++5(CO3)3(OH)4·6(H2O)

Composition:

Molecular Weight = 639.86 gm

Copper 49.66 % Cu 62.16 % CuO

Hydrogen 2.21 % H 19.71 % H₂O

Carbon 5.63 % C 20.63 % CO₂

Oxygen 42.51 % O

______ ______

100.00 % 102.50 % = TOTAL OXIDE

Empirical Formula:

Cu₅(CO₃)₃(OH)₂·6(H₂O)

Environment:

Amorphous analog of malachite. Weathered tremolitic rock that contains disseminated copper and iron sulfides.

IMA Status:

Approved IMA 1979

Locality:

Carr Boyd mine, 100 km N of Kalgoorlie, WA, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for George Herbert Payne (1912-1989), past chief of the mineral division, Western Australian Government Chemical Laboratories.

Georgeite Image

Images:

Georgeite

Comments: Pale blue crusts of georgeite with dark green atacamite.
Location: Carr-Boyd Nickel Mine, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Georgeite Crystallography

Crystal System:

Amorphous- No Crystals

Physical Properties of Georgeite

Color:

Light blue.

Density:

2.55

Diaphaniety:

Transparent to Subopaque

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

1-2 - Between Talc and Gypsum

Luster:

Vitreous - Dull

Streak:

light blue

Optical Properties of Georgeite

Gladstone-Dale:

CI meas= -0.076 (Fair) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2325,KC= 0.2162

Optical Data:

Isotropic, n=1.593.

Calculated Properties of Georgeite

Electron Density:

r_electron=2.49 gm/cc
note: r_Georgeite=2.55 gm/cc.

Fermion Index

Fermion Index = 0.00082
Boson Index = 0.99918

Photoelectric:

PE_Georgeite= 21.50 barns/electron
U=PE_Georgeite x r_electron= 53.65 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Georgeite is Not Radioactive

Georgeite Classification

Dana Class:

16a.3.3.1 (16a)Carbonates - Hydroxyl or Halogen

(16a.3)where (A B)2 (XO3) Zq

(16a.3.3)Dana Group

16a.3.3.1 Georgeite Cu5(CO3)3(OH)4·6(H2O) None

Strunz Class:

V/C.01-25 V - Nitrates, Carbonates and Borates

V/C - Waterfree carbonates with unfamiliar anions

V/C.01 - Azurite - Rosasite group and related compounds

V/C.01-10 Azurite Cu3(CO3)2(OH)2 P 2₁/a 2/m

V/C.01-20 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-25 Georgeite Cu5(CO3)3(OH)4·6(H2O) None

V/C.01-30 Pokrovskite Mg2(CO3)(OH)2·0.5(H2O) P 2₁/a 2/m

V/C.01-40 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 2₁/a 2/m

V/C.01-50 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri

V/C.01-60 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-70 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

V/C.01-80 Rosasite (Cu,Zn)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-90 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-100 Hydrozincite Zn5(CO3)2(OH)6 C 2/m 2/m

V/C.01-105 Brianyoungite Zn3(CO3,SO4)(OH)4 C 2/m 2/m

V/C.01-110 Aurichalcite (Zn,Cu)5(CO3)2(OH)6 P 2₁/m 2/m

V/C.01-120 Loseyite (Mn,Zn)7(CO3)2(OH)10 A2/a 2/m

V/C.01-130 Sclarite (Zn,Mg,Mn)4Zn3(CO3)2(OH)10 A2/a 2/m

Other Georgeite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Print or Cut-and-Paste your Georgeite Specimen Label here :

Georgeite

Cu++5(CO3)3(OH)4·6(H2O)
Dana No: 16a.3.3.1 Strunz No: V/C.01-25
Locality:

Notes: